Home / 39,397.12-54,368.79-21,492.79

Finding the Fourth Proportional to 39,397.12, 54,368.79 and 21,492.79

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Solution

The fourth proportional to 39,397.12, 54,368.79 and 21,492.79 is: 29,660.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,397.12 : 54,368.79 = 21,492.79 : x
  2. Step 2: Convert to fraction form
    39,397.12/54,368.79 = 21,492.79/x
  3. Step 3: Cross multiply
    39,397.12x = 54,368.79 × 21,492.79
  4. Step 4: Simplify right side
    39,397.12x = 1,168,536,986.02
  5. Step 5: Solve for x
    x = 1,168,536,986.02/39,397.12
  6. Step 6: Final answer
    x = 29,660.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.